福建晋江天然海砂，粒径0.5-1.0mm，颗粒圆润，强度高，不易破损，无粉末，是***优质的石英砂过滤滤料，质量优于建设部《水处理石英砂》标准。粒径目与毫米的换算表：目毫米目毫米目毫米目毫米2.58.00121.40600.2502700.05336.70141.18650.2123250.04544.75161.00800.1804000.03854.00200.851000.1505000.03163.35240.711150.1256000.02572.80280.601500.1068000.01982.36320.501700.09010000.01592.00350.4252000.07515000.010101.70480.3002500.06330000.005价格：90元/50公斤。)